Light bar



FIG. 1 is a top front perspective view of a light bar;

FIG. 2 is a top plan view of FIG. 1;

FIG. 3 is a bottom plan view of FIG. 1;

FIG. 4 is a front elevation view of FIG. 1, the rear elevation being a mirror image thereof;

FIG. 5 is a right side elevation view of FIG. 1, the left side elevation being a mirror image thereof; and,

FIG. 6 is a partial section view of FIG. 4, taken along lines 6-6.

The broken lines shown in the drawings depict portions of the light bar that form no part of the claimed design. 

CLAIM The ornamental design for a light bar, as shown and described. 